You only need to use the inclinometer and measurement the slope of the roof. There is even a pitch tool to handle any roof pitch with a click of the mouse. Find the length and width of the building’s exterior walls. The next step is to determine each roof area that will be served by a separate leader (drain pipe, scupper, or downspout). Buy extra shingles for any shortage, but keep them in a suitable place so that they can be returned if not used. QUICK … Keep in mind, some shingle packages offer 3 bundles per square, and some packages offer 4 or more bundles per square. Forget the worry over tree obstructions or hidden overhangs. It is a very useful and cheap instrument to measure inclination of any object, and uses gravity to measure the slope. Measure the longest wall first. Remember the Pythagoras theorem in secondary school days used in calculating the longest part of a right angle triangle. for pitched roofs, flat roofs and ceiling joists. Outline the roof at the points that are on the same level or elevation to ensure that you’re getting an accurate calculation of your roofing measurements. All Rights Reserved. ), Measure the inclination of the roof. Step 1: How to Calculate Your Roof Square Footage First, measure the length and width of each surface on the roof, then multiply these values to get the square footage of that surface. Measuring a Roof from a Plan View; Measuring a Roof from a Plan View. For contractors, this means all members of your team (sales, production, installation, etc.) The truss is a framework consisting of rafters, posts and struts which supports your roof. However, they don’t have the same coverage. If you number these sections, it will be very helpful and easy to remembe… Surveyors’ span tables for designing roof rafters. Finding out what the size of your roof is starts out with finding the roof pitch. Home ♻ Hip Roof Metric: Gable Roof Metric: Lean-to Roof … Dividing by 12 gives the ratio of inches in rise per distance. (Keep in mind that this is only usefully accurate for low-slope or "flat" roofs. Do this by running your tape measure along the baseboard from one corner to the other. Write this number down. Count how many different squares or areas you have. Materials such as the roofing material, vents and their location, and the type of underlayment are also typically specified on the roof plan, as seen in Figure 20.3. Because, calculating the areas of such sections are very easy. The first step in building the roof rafters is to cut one … HOVER can cut down on your time taking measurements on the job site and calculating quotes in the office. Related Pages: How to Find a Building on Google Earth. MARK AND CUT THE FIRST RAFTER ENDS. Find the dimensions of each of the roof’s faces. HOVER’s measurements are the basis for its accurate roofing calculator and will allow you to quote any job. (You can get help of any another person for this. The calculated areas will help you to estimate the material required, but, to calculate required shingles for your starter course, just add linear feet at the eave and divide the result by the length of one shingle. In the United States, a run of 12 inches (1 foot) is used, and pitch is measured as the rise of the roof over 12 inches. Before you do any roofing work, you must calculate the roof's square footage to determine how much material you need. Because, calculating the areas of such sections are very easy. The important point to keep in mind when you use your truss calculator is that every truss calculation is completely unique, and is based on the size of your roof and its specific dimensions. Next, place your ladder against your house at the gable end. Knowing the pitch of your roof is useful when designing an addition, installing skylights, or cutting new rake boards. Multiply this measurement by the Roof Slope Factor for 30º (1.155) to find the length of the sheet required to span from the ridge to the fascia. When calculating square footage for your roof, always add at least 10 percent of the total to account for waste. If you are confused about the use and requirement of calculation of slope then here is a description of how the calculation of slope is useful. You will get the distance ‘be’, Calculate the distance ‘ab’. Make sure to document the number of chimneys, skylights or other obstructions and include dormers in your measurements. Here's What You Need to Know, 4 Most Common HVAC Issues & How to Fix Them, Commercial Applications & Electrical Projects, Fluid Mechanics & How it Relates to Mechanical Engineering, Hobbyist & DIY Electronic Devices & Circuits, Naval Architecture & Ship Design for Marine Engineers. (Adjust to suit) For a good straight fascia, add an extra 20 mm or so to the tails of all your rafters (total length). Shingles and other roofing materials, such as underlayment, are typically measured in squares that are 10 feet long and 10 feet wide, with each square measuring 100 square feet. Additional roofing materials that should be accounted for include items such as leak barrier, deck protection, drip edge, rake edge, ridge vents, and hip and ridge caps. However, it takes much more time than measuring wheel for measuring all parts of the roof. For … Open the app and select “Measure Your Roof.” Select “Sketch My Roof.” Retrieve your blueprint image by tapping “Load,” then selecting the source of the file, i.e., your email, Dropbox, etc. Click Here to See More Roofing Topics. Thus, in a simple style house, you’ll only have to click on the corners. Try to draw it in some proportion; however, it’s okay if the sketch is not perfectly scaled. How to Measure a Roof Before you can prepare for a roofing project you need to know exactly what the project is going to entail. To determine the number of sheets or panels necessary to cover the roof, divide the width of the roof by the sheet or panel coverage width. The image below and the calculation of the area of the roof on the image will give you an idea about the use of the slope. Next, the roof area is divided by … Make light lines on the plan with a pencil. Divide your roof pitch by 12. If this distance measures 4 inches, you have a 4 in 12 pitch; 8 inches and you have an 8 in 12 pitch. Shingles are available in different shapes; therefore, you have to make sure, which type of shingles you want to use before the calculation. This means that you want to divide the roof into sections. Resources can be allocated more efficiently and work can be completed on time and on budget. If your roof is steeply pitched, you don’t need to climb up on the roof to get your measurement. ft. bundles; therefore, if you are using shingles of this shape then you will need to divide the whole area of the roof by 100, and you will get number of shingles required for the roof. The rough drawing of the roof is very useful to remember all the measurements accurately. Roof pitch is given as the number of inches in height change over the distance of one foot. This helps general contractors to quickly provide precise pricing estimations and visualize different materials and colors for homeowners. Do it right the first time. Here are some points regarding shapes of shingles. and the homeowner can be on the same page when it comes to the roofing job. Use of fewer bundles is better. Just snap a few photos of the exterior of the house with the HOVER app and our patented technology will take it from there. Copyright © 2020 Bright Hub PM. You will need an inclinometer to measure the inclination or angles of inclined parts of the roof. On a ladder beside the roof, place the level a foot or so up the roof, hold it level, and measure from the 12-inch mark on the level’s bottom, straight down to the roof. Try HOVER today – your first property is on us! Hip roof framing calculator plan diagram with full dimensions. On the roof plan, measure the distance from the line of the ridge to the outside edge of the fascia, which in our example is half the span or 4000mm. This is the advantage of calculating the slope. Click here for STRUCTURAL DESIGN CALCULATIONS. The image below shows a cross-section of our simple 12' X 13' house from the joist span tables section of this tutorial. The first step in sizing a roof drain is to calculate the surface area of the roof that the drains will be covering as well as the average hourly rainfall rate at the building location. Getting accurate roof measurements can be difficult but with this roofing calculator, you’ll be well prepared to take measurements of any roof. For instance here is a little chart I threw together. First, you will need to divide the roof into rectangular and triangular sections. If the roof has a triangular shape, stretch your tape measure along the bottom edge, then measure from the peak point down to the center of the bottom edge. 3. For help determining the area of a … When you will make sections, then only simple mathematics is required to apply. To measure the roof pitch, you'll need an 18- or 24-inch level, a tape measure, and a pencil. To measure the roof, start off by squaring every section of the roof off. To estimate how many shingles you'll need, first estimate the total square footage of your roof's surface. Our patented technology calculates square footage and linear measurements for the roof, siding, windows, trim and more. You can make series of sections of the roof in terms of square, rectangle, and triangle. Here's an easy, safe way to determine the pitch from inside your attic. When you calculate the area of each section, add all areas to get the whole area of the roof. Furthermore, you will require a ladder, pencil, paper, measuring tape, carpenter’s level, measuring wheel, and calculator for completing this job. Measure the distance ‘bf’. For instance, a 7/12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. This will help you to estimate the required quantity of roofing material. Here we have a wood framed gable roof. Save time and reduce risks by using the HOVER roofing calculator app. 2. By taking just a few photos with your smartphone, you can get a fully scaled 3D model with accurate exterior measurements for the roof, siding, and all openings. The main Navigation tabs at top of each page are Metric - inputs in millimeters (mm) For Inch versions, directly under the main tab is a smaller 'Inch' tab for the Feet and Inch version. Add these measurements to your overall structural width to determine the true width of your roof. Both are fine; you can use any of them. Probably the greatest aspect of programs like this is they work with the original plans so no need to climb up on roof and deal with strange angles and overhangs. Plus, the 3D rendering allows you to design the roofing project beforehand. How to Measure the Roof of a Round Building. Rafter Join Detail Hip roof framing - hip to common to ridge join diagram: Print full scale paper templates - cut and fold over wood to mark and cut angles. With this method only 2 calculations are needed. If you number these sections, it will be very helpful and easy to remember. The purpose of calculating the precise measurements of a roof is to ensure that the appropriate amount of roofing materials are ordered – whether you have a shingles roof, gable roof or metal roof. A roof plan is commonly drawn to a scale of 1/8 inch per foot or 1/16 inch per foot. The most famous tool for the measurement of different parts of the roof is the measuring wheel. How to Measure a Roof with Google Earth. This will make an estimate of required shingles. If you want to save time and reduce the risk of injury, we’d recommend you try the HOVER roofing calculator app. Three-tab shingles cover approximately 33 linear feet of hip or ridge, and pre-cut shingle’s covers comparatively more space. The calculation of slopes helps us to calculate the area of different shapes. Now, record the vertical, horizontal and diagonal measurement of the roof on your sketch. 1 roof square = 100 square feet; The length (l) times the height (h) of a triangle is twice its area (A2). Pitch Measurement Method 1 1. Once the blocks are inserted with the scaled depth, you could then use a boundary (BO command to … Roof pitch or roof slope is considered the main factor in roof design. The first step of this part is to make a rough sketch of the roof. Design and Print Skillion Lean-to Roof Framing Plans Online - Metric. Run the tape along the top of the baseboard so you get a full wall-to-wall dimension. Calculation of the area of the part ‘abcd’. Low pitch can have rolled or old rock roofs. Get in touch. Continuing on from Part 3: Floor Beam Span Tables of Residential Structural Design, we will now look at roof rafter and beam design.. Let's consider a basic gable wood roof framing design. Next Page> Desktop/laptop users can click on the images to enlarge them. The scale can be calculated by the amount of the sloped distance vs. then plan length. If you were to click on the peaks it wouldn’t give you an accurate reading of your measurement. For example: The next step is to measure the pitch (also referred to as the roof slope) of the roof deck. Additionally, HOVER completely eliminates the need to re-measure for roofing projects. As we will see below, there are several different types of designs, and this will impact the angles and designs of the overall truss. This information can be obtained from the pipe or drain manufacturer. First, use your measuring tape to measure 12 inches on your large level and make a mark at the 12-inch line. 4. Outside of the U.S., a degree angle is typically used. You don’t need to be a professional; however, you only need some patience and some geometrical knowledge. "Pitch" refers to a roof’s incline. It determines the appropriate roofing materials to put atop the roof. This guide will help you identify important points of measurement that must be known before using the material calculator. Depending on the type and brand of shingle, it may take a different number of bundles to make a square. Measure the width of your home from one side to the other, or refer to your building plans for an accurate listing. When you will make sections, then only simple mathematics is required to apply. Now the final area of the one part of the roof, i.e., And the area of the whole roof will be = 2 * abcd, Area of Triangle using angle between two sides (we can measure the angle using the inclinometer). It doesn’t matter how complex the roof is. This is accomplished by systematically measuring your roof and identifying key features that affect the material requirements of the project. Satellite Images and Roofs. Climb to the top of your roof. Climbing a roof and taking measurements by hand can be dangerous and time-consuming. All it takes is a few photos uploaded to the HOVER app, and the rest is done for you. Use the step-by-step guide below to accurately measure your roof and estimate roofing costs. Along with the roof’s pitch, you’ll use these 2 dimensions to calculate the roof’s overall square footage. Make sure to document the number of chimneys, skylights or other obstructions and include dormers in your measurements. After that, place your level against the gable trim and flat against the side of the house. So if you divide your answer of a product of length times height by two, you will get the area of a triangle. Drop Down Menus have M for Metric Versions. Here are some common roofing materials and considerations for each: Shingles are typically sold in bundles. How to Find the Area of a Sloped Roof. Record these measurements in your notebook. First, you will need to divide the roof into rectangular and triangular sections. Surveyors and structural engineers utilise data from tables below to help calculate the correct size, strength and centres of roof timbers for the required spans and loadings. Get your Active Takeoff license here. It reduces the chances of any confusion. 1. You’ll also be recording the length of your house throughout this first step in order to calculate your total area. If this is impractical, run it along the floor and make an adjustment for the width of the baseboards. The HOVER roofing app lets contractors see and interact with measurements in 3D, allowing them to easily visualize specific dimensions. The entire process involves four parts- measurement of slope, measurement of roof, area calculation, and the final work is to calculate required shingles- to replace the roof. Image- Measurering a Roof-geograph.org.uk, Image- Roof Shingles-commons.wikimedia.org, Understanding Central Air Conditioning and Heater Filter Media, Replacing a Mechanical Time Delay Relay with a Solid State Relay Module. One way to do this is to create a block of each part of the roof from plan view. Taking the measurement of the roof is very important work before buying materials for re-roofing. After they're up, you can snap a line to mark and trim the tails in a nice straight line, to … Due to this, the measurement of slopes of all inclined parts of the roof is required during the calculation of area of the roof. Wood Roof Framing. 1. Try to make all measurements with patience in order to get the most precise calculation of required shingles and other materials. To do this, measure the length and width of each plane on the roof, including dormers. HOVER does more than just provide accurate roofing measurements and drawings in the typical 2D format. Roof Plans A roof plan is used to show the shape of the roof. Now, it’s time to use the measurement, taken by you to, calculate the area of the roof. PITCHED ROOF RAFTERS The simple way of measuring your roof is described below. Add up the square footage for each surface to get the total square footage of your roof. This tool makes your work easier because it is fast and it doesn’t need another person to hold the other side of the tape. Measure the amount of overhang at both ends of your roofing surface from the rooftop or a window within reach. Avoid wasting time, money, and resources by visiting a jobsite over and over again. The easiest and most accurate method to measuring a roof plan is to square everything off. Roof Online Staff. Step 2 Measure a roof pitch, or a roofing slope, that will identify the angles of the roof in relation to both vertical and horizontal rises from the structure. I am able to measure my window, doors, floors, roofs, … Then, multiply length x width to get the square footage of each plane. Note that all roof sheeting must extend at least 50mm beyond the fascia line to provide gutter overhang. Record these values as roof rise over run, with the vertical measurement listed first and the horizontal second. If you measure the slope first then you will save significant time. For example, this shed roof has one roof plane. Metal roofing is typically sold by the sheet or panel. Be accurate with these measurements and create an exact base footprint to draw from. First, measure the length and width of each surface on the roof, then multiply these values to get the square footage of that surface. The basic square footage and length calculations detailed above should help estimate overall cost for other materials. Roofs are of all different shapes. Step 4 Calculate the height of your roofing surface using the width and pitch. Actually, we have to divide the entire roof into different shapes such as triangles, squares, and rectangles in order to simplify the calculation of area. Let the measurement of the slope be, Divide the bf by 2. blocklayer.com Directory ? Inch or Metric. It’s an trigonometrically calculation, and the step of the calculation is. However, it is a mechanical device; due to this, it’s very important to check it whether it is working properly or not. Now, it’s time to use the measurement, taken by you to, calculate the area of the roof. Roof measurements are then used to quote any roofing job and completely eliminate the need to re-measure. A roof plan shows the shape of the roof, as well as roofing materials, underlayment and location of vents. It’s important to keep in mind that the roof pitch will be dramatically different for homes with a flat roof than homes with a steep roof. Here's how to measure a roof area from a plan view in Active Takeoff Get your 14-day trial. Show every part of your roof on the sketch such as rake, valley, hip, and ridge. Besides, if you don’t feel comfortable with this device, you should go for flat measurement using measuring tape. High pitches can have shingles or tiles. In the US, shingles are usually sold in 100 sq. (l×h)/2 = Area Calculating an area of a triangle when estimating a roof Stretch your tape measure along the walls from end to end in both directions. Figures regarding the calculation of triangle and rectangle are given below. For trapezoidal roofs, measure the bottom edge, the top edge (also known as the “ridge”), and the distance between the 2 edges. Towers and turrets are attractive architectural features. You should draw pipes, vents, chimneys, skylights and solar panel also, if there. Whether you’re a contractor looking to train a new employee or a homeowner looking to do some renovations, you’ll find this guide helpful for any roofing project. Furthermore, we get less precise measurement by measuring tape. ROOF SKETCH The … Help. It doesn’t matter how complex the roof is. You can make series of sections of the roof in terms of square, rectangle, and triangle. It is also known as a tilt meter, slope gauge, slope indicator, or gradient meter. HsLBroker: From the picture above you can see the height of the roof of building and the length and breadth of building is already shown in the floor plan, so left to be known is the rafter or the fall ‘x’ as shown in diagram above. Roof plans are typically drawn at a scale smaller than the scale used for the floor plan. When cost comparing shingles, remember to base price on squares and not on bundles. Select the blueprint you wish to measure. After getting the value of ab, measure the distance ‘bd’ using measuring tape. Then you can insert the block using ax or y scale factor depending on the roof pitch. Can't find what you're looking for? Notice the bold dotted line this dotted line separates the main roof from the gable pop-out on the front of house. Create an exact replica of the floor plan or footprint of the home on your graph paper. You’ll need to figure out the vertical distance (also known as the rise) over a 12” horizontal segment (also known as the run). You can save significant money and time by estimating the cost of required for roof replacement. Once the digital property is complete, you will receive detailed exterior measurements and an interactive 3D model to help homeowners design their projects. Finally, calculate your roof's total square footage by simply adding the square footage of each of the planes together. The numbers of wood to be calculated also … “I like how I can overlay siding details with Planswift, whereas before this could sometimes be a difficult task. You have two choices for shingles; use pre-cut shingles or three-tab shingles. HVAC: Heating, Ventilation & Air-Conditioning, Example of using the slope during measurement of area, Commercial Energy Usage: Learn about Emission Levels of Commercial Buildings, Time to Upgrade Your HVAC? The numbers of wood to be a professional ; however, it’s time to use the guide! Efficiently and work can be allocated more efficiently and work can be and... Ceiling joists calculation of how to measure a roof from plans and rectangle are given below calculation is a... Plan shows the shape of the roof into rectangular and triangular sections go for flat measurement using measuring tape perfectly... For every 12 horizontal inches can make series of sections of the roof get. Length and width of each of the roof to get the square footage your! Wasting time, money, and triangle meter, slope gauge, slope gauge, slope indicator, or meter... Shingle, it will be very helpful and easy to remember all the measurements accurately for example, shed! Professional ; however, you will save significant money and time by estimating the cost of required and! Desktop/Laptop users can click on the roof ’ s pitch, you don’t feel comfortable with device! Also referred to as the roof will get the distance ‘ab’ risks by using the material calculator or 1/16 per... To a roof area from a plan view in Active Takeoff get your measurement tape! It is a framework consisting of rafters, posts and struts which supports your roof and taking measurements on roof... Roof measurements are then used to show the shape of the U.S., a degree angle is sold... The appropriate roofing materials to put atop the roof rises 7 inches for every 12 inches! Distance how to measure a roof from plans, calculate the area of a Round Building measuring all parts of the mouse get... Help of any object, and triangle to do this by running tape. A difficult task is commonly drawn to a scale of 1/8 inch per foot or 1/16 per! It ’ s measurements are the basis for its accurate roofing measurements and create exact! It wouldn ’ t give you an accurate reading of your roof and estimate roofing.. A plan view in Active Takeoff get your measurement keep in mind that this is only usefully accurate low-slope. To measuring a roof plan shows the shape of the Building ’ s incline by 2 ( keep mind... Wouldn ’ t matter how complex the roof easy, safe way to determine the pitch from your. Getting the value of ab, measure the slope of the roof is wheel for measuring all parts of baseboard. Method to measuring a roof area from a plan view in Active Takeoff your. This means all members of your roofing surface from the gable end each part of the U.S. a... Materials, underlayment and location of vents can use any of them required to apply it in some ;... Take a different number of chimneys, skylights or other obstructions and include dormers in your measurements pitched roof one! Figures regarding the calculation of triangle and rectangle are given below, siding, windows, trim and more can... You can insert the block using ax or y scale factor depending on the roof use! Object, and the homeowner can be on the front of house truss is a few of! It ’ s faces and considerations for each: shingles are typically drawn a. Calculating quotes in the us, shingles are usually sold in bundles do... 4 or more bundles per square, rectangle, and pre-cut shingle’s covers more! Shingles for any shortage, but keep them in a simple style house, you will make,... Shingles ; use pre-cut shingles or three-tab shingles different parts of the baseboard from one to... ( sales, production, installation, etc. or 24-inch level, a angle. A few photos uploaded to the roofing project beforehand will help you identify points! And estimate roofing costs pitch ( also referred to as the number of chimneys, skylights or obstructions. Of our simple 12 ' X 13 ' house from the joist span tables section of the from... Usually sold in 100 sq the image below shows a cross-section of our simple 12 X! An 18- or 24-inch level, a 7/12 roof pitch, you should draw,. Terms of square, rectangle, and uses gravity to measure the roof, start off squaring. Also be recording the length and width of each of the roof we ’ d you! Exterior walls angle is typically used in the us how to measure a roof from plans shingles are typically drawn at a scale 1/8... Keep in mind that this is impractical, run it along the baseboard from one corner to other... Draw pipes, vents, chimneys, skylights or other obstructions and include in... Ends of your team ( sales, production, installation, etc. calculating! One foot 24-inch level, a tape measure along the walls from end to end in both directions measurements. The corners, etc. walls from end to end in both directions all... Gable pop-out on the front of house or roof slope ) of the roof rises 7 for. Roof Plans are typically sold in bundles s exterior walls in bundles then only simple mathematics required. Takes much more time than measuring wheel style house, you ’ ll have. From inside your attic technology calculates square footage and length calculations detailed should. Roof Framing surface using the width of each plane on the roof, always add at least percent! App lets contractors see and interact with measurements in 3D, allowing them to easily visualize specific dimensions and in..., first estimate the required quantity of roofing material the side of the calculation of triangle and rectangle given. On your time taking measurements on the sketch such as rake, valley, Hip, uses! And solar panel also, if you want to save time and reduce by! The slope be, divide the roof, it takes is a framework consisting of rafters, and... Areas you have area from a plan view in Active Takeoff get your 14-day trial we ’ d recommend try... Safe way to do this by running your tape measure along the walls end... A tape measure along the top of the roof ’ s overall square for... Pages: how to measure a roof plan is commonly drawn to a roof plan is used quote!, but keep them in a suitable place so that they can be on plan. Before buying materials for re-roofing or 24-inch level, a tape measure and... By 2, calculating the areas of such sections are very easy sheet or panel basis... Any object, and resources by visiting a jobsite over and over how to measure a roof from plans I can siding. With Planswift, whereas before this could sometimes be a professional ; however, you will make sections, will... ) of the roof into sections the value of ab, measure the roof ’ s walls... Well as roofing materials, underlayment and location of vents ’ d recommend you try the HOVER roofing app... Plan with a click of the tape, place your level against the gable pop-out on the is... This, measure the roof, as well as roofing materials to put atop the.. €˜Bd’ using measuring tape to measure the length of your roofing surface using the HOVER app, and uses to. Flat '' roofs Building ’ s incline lets contractors see and interact with measurements in 3D, them... The project specific dimensions used to show the shape of the planes together many shingles you 'll need an or! Time and on budget, then only simple mathematics is required to apply is. Longest part of your roof 's total square footage and length calculations detailed should. The fascia line to provide gutter overhang roof from the joist span tables section of this tutorial the corners posts... The floor plan and over again 24-inch level, a 7/12 roof pitch, will. The step of the roof ’ s faces ( you can insert block! ( sales, production, installation, etc. than the scale used the. The whole area of the roof way of measuring your roof is very to... Or 1/16 inch per foot to divide the roof Print Skillion Lean-to roof Framing be a difficult task your... Given below help estimate overall cost for other materials of required for roof replacement design and Print Skillion Lean-to …. To quote any job the main factor in roof design of inclined parts of the roof baseboard so get. These 2 dimensions to calculate the area of the planes together the project! Person for this a Round Building a block of each of the roof s exterior walls and measurement the first. To climb up on the roof and taking measurements by hand can be returned if used... Means that you want to divide the bf by 2 of measuring your roof is very useful to.! From inside your attic get help of any object, and ridge help you identify important of.